Jet Streams Slower than the polar jet. Still travels west to east Usually at about 25 N Usually at an altitude of about 13 km. Subtropical Jet Stream
{"Image DocumentName": "Jet Streams Subtropical Jet Stream Slower than the polar jet.", "Image ImageDescription": "Semi-permanent jet that exists over the subtropics. Is mainly a wintertime phenomenon. Due to the weak summertime temperature gradient, the subtropical jet is relatively weak during the summer. Slower than the polar jet. Still travels west to east. Usually at about 25 N. Usually at an altitude of about 13 km.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}